During my studies, I’ve build the Robotic Artist together with my fellow student Martin, which later even won an award for the “Bestes Projekt 2011″ competition at the University of Applied Science Hamburg. The project is mostly video-documented, so all I'll say is enjoy the video: http://youtu.be/yTUmd1g2wRI
Components
1×
Arduino Uno
the original one from italy
2×
PVC hard foam plate
each 500x500mm, enough for the 38 plastic parts the robot is made from
6×
ball bearings
taken form old inline skates
59×
screws m3
holding everything together
1×
slide bearing
taken from some kind of old fitness device